Gain Original Flings Laundry Detergent Pacs with Aroma Boost are easy to use and easy on the nose. Each one gives you 50 percent more of the Gain scent compared to Gain liquid detergent, delivering a crisp freshness that's only outmatched by the clean they provide. These three-in-one fling pacs include laundry detergent, Oxi Clean and Febreze. Pacs dissolve in both hot and cold water and are HE compatible.